-
公开(公告)号：JPH10309457A
公开(公告)日：1998-11-24
申请号：JP11332098
申请日：1998-04-23
Applicant: BASF AG
Inventor： SCHLIEPHAKE VOLKER DR , HAMMON ULRICH DR , RAUH ULRICH , SCHRAUT ARMIN DR
Abstract: PROBLEM TO BE SOLVED: To provide a reactor apparatus and a method for treating fluid material in which temperature is measured in the representative conditions in the tubular reactors. SOLUTION: The reactor apparatus comprises both a tubular reactor equipped with a temperature measuring unit and a tubular reactor unequipped with the temperature measuring unit. The tubular reactors are set up so that the mass of solid particles to be introduced is directly proportional to the free cross-sectional area of the respective tubular reactors and flow resistance or pressure drop in the tubular reactors, and accordingly average rectilinear velocity are identical when gas flow rate being proportional to the free cross-sectional area is conducted. Concretely, the above- mentioned pressure drop is adjusted by fines fraction of the solid particles in accordance with the following formula. mfines =mtot (Pm -PI)/(P2 -P1 ) (in formula, mfines denotes mass of fines fraction. mtot denotes total mass of solid particle and fines fraction. Pm denotes average pressure drop in tubular reactor unequipped with temperature measuring unit. P1 denotes pressure drop in tubular reactor equipped with temperature measuring unit in the case of filling solid particles. P2 denotes pressure drop in tubular reactor which is equipped with temperature measuring unit and is filled with fines fraction).
-
公开(公告)号：MY116119A
公开(公告)日：2003-11-28
申请号：MYPI19972788
申请日：1997-06-20
Applicant: BASF AG
Inventor： HAMMON ULRICH DR , RAUH ULRICH , SCHLIEPHAKE VOLKER DR , PIES WOLFGANG DR
Abstract: IN A PROCESS FOR THE DISPOSAL OF LOW, MEDIUM, AND HIGH-BOILING SECONDARY COMPONENTS (1,2,3) FORMED DURING THE PREPARATION OF (METH) ACRYLIC ACID THE GASEOUS LOW BOILING SECONDARY COMPONENTS (2) ARE BURNED, WHILST LOW-BOILING AND MEDIUM-BOILING SECONDARY COMPONENTS (2) THAT ARE DISSOLVED IN WATER OPTIONALLY TOGETHER WITH HIGH-BOILING SECONDARY COMPONENTS (3) TREATED WITH SOLVENT ARE ADDED. (FIGURE 1)
-
公开(公告)号：DE19717165A1
公开(公告)日：1998-10-29
申请号：DE19717165
申请日：1997-04-23
Applicant: BASF AG
Inventor： SCHLIEPHAKE VOLKER DR , HAMMON ULRICH DR , RAUH ULRICH , SCHRAUT ARMIN DR
Abstract: Reactor arrangement comprises at least two tubular reactors filled with solid particles, at least one reactor containing a temperature measuring device. The novelty is that the tubular reactors are arranged so that the ratio of the composition of the solid particles to the free cross-sectional surfaces of each reactor as well as the pressure loss, measured by passing an inert gas proportionally transversal to the free cross-sectional, are equal over each tubular reactor. Also claimed is a process for treating fluid compositions with the production and consumption of thermal energy using the above reactor arrangement.
-
公开(公告)号：DE19624674A1
公开(公告)日：1998-01-02
申请号：DE19624674
申请日：1996-06-20
Applicant: BASF AG
Inventor： SCHLIEPHAKE VOLKER DR , HAMMON ULRICH DR , PIES WOLFGANG DR , RAUH ULRICH
Abstract: In a method for removing low, medium and high-boiling by-products obtained when producing acrylic acids or methacrylic acids, the gaseous low-boiling by-products are burned, whereby low and medium-boiling by-products hat have been dissolved in water, if desired together with high-boiling by-products that have been treated with the dissolvent, are taken to the burning stage.
-
公开(公告)号：AU2003246662A1
公开(公告)日：2004-02-02
申请号：AU2003246662
申请日：2003-07-09
Applicant: BASF AG
Inventor： HAMMON ULRICH , MESCHKE JOCHEN , RAUH ULRICH , MULLER-ENGEL KLAUS JOACHIM , SCHLEMMER PETER
-
Patent Agency Ranking
公开(公告)号：CZ292498B6
公开(公告)日：2003-10-15
申请号：CZ273596
申请日：1996-09-18
Applicant: BASF AG
Inventor： HAMMON ULRICH DR , SCHLIEPHAKE VOLKER DR , PIES WOLFGANG DR , RAUH ULRICH
Abstract: The present method for cleaning a rectification column in which unsaturated acids have been separated by rectification from solvents in which these acids were absorbed after the synthesis reaction, the rectification is briefly interrupted and the rectification column is flushed with an aqueous solution of potassium hydroxide or an aqueous solution of sodium hydroxide in order to separate polymeric sediments. The interruption is preferably carried out at regular time intervals, whereby an alkali metal or an alkaline earth metal neutral salt can be added in the sodium or potassium hydroxide aqueous solution.
-
公开(公告)号：DE59609045D1
公开(公告)日：2002-05-16
申请号：DE59609045
申请日：1996-09-26
Applicant: BASF AG
Inventor： HAMMON DR , SCHLIEPHAKE DR , PIES DR , RAUH ULRICH
Abstract: A process for the rectification and sepn. of unsatd. carboxylic acids (I) from the solvents in which (I) are absorbed after the synthesis reaction. The process involves interrupting the rectification and flushing out the rectification column with basic soln.
-
公开(公告)号：DE59602784D1
公开(公告)日：1999-09-23
申请号：DE59602784
申请日：1996-09-26
Applicant: BASF AG
Inventor： BAUR KARL GERHARD , ANNEN ULRICH , EXNER HERBERT , FRIED MICHAEL , RAUH ULRICH
IPC: C07C67/08 , C07C67/327 , C07C69/54
Abstract: A process for the prodn. of (1-4C alkyl) (meth)acrylate esters (AM/AE) from esters of formula (I) and opt. esters of formula (II), in which R = H or Me; R , R = 1-4C alkyl; n = 0 or more. The process comprises reaction in the liq. phase under reduced pressure in presence of acid, with continuous removal of cleavage prods. Also claimed is a process for the prodn. of (AM/AE) by the acid-catalysed esterification of 1-4C alkanols with (meth)acrylic acid, in which by-prods. (I) and (II) are sepd. from the prod. mixt. and subjected to the above cleavage process, and the cleavage prods. are continuously removed and returned to the esterification process.
-
公开(公告)号：DE59505830D1
公开(公告)日：1999-06-10
申请号：DE59505830
申请日：1995-09-30
Applicant: BASF AG
Inventor： DOCKNER TONI DR , LERMER HELMUT DR , RAUH ULRICH , NESTLER GERHARD DR
Abstract: In the sepn. of a di(meth)acrylate (I) of a 4-6 C alkandiol (II) from a mixt. of (II), the mono(meth) acrylate (III) and (I) by extn. with an organic solvent (IV) in the presence of water, the mixt. contg. (I) is supplied to the middle of an extn. column and water and (V) are passed through the column in countercurrent. Also claimed is the prepn. (III), esp. butan-1,4-diol monoacrylate (IIIA).
-
公开(公告)号：DK0706990T3
公开(公告)日：1999-02-08
申请号：DK95115503
申请日：1995-09-30
Applicant: BASF AG
Inventor： DOCKNER TONI DR , LERMER HELMUT DR , RAUH ULRICH , NESTLER GERHARD DR
Abstract: In the prepn. of a mono(meth)acrylate (I) of a 4-6 C alkandiol (II) from an aq. soln. contg. (I) and (II) by solvent extn., the organic solvent used for extn. is selected from esters (III) of 1-4 C alkanecarboxylic acids and 1-5 C alkanols, simple and mixed 4-8 C dialkyl ethers (IV) and mixts. of these. Also claimed is a method of prepn. and sepg. (I).
-
-
-
-
-
-
-
-
-
Search Results
37
records
(took 0.01 seconds)
